Are the terms GUI and CLI are interchangeable as they are functionally identical.?

No, the terms GUI (Graphical User Interface) and CLI (Command Line Interface) are not interchangeable, as they represent different methods of user interaction with a computer. A GUI uses visual elements like Windows, icons, and menus, making it more intuitive for users, while a CLI relies on text-based commands, which can be more efficient for experienced users. Although both serve the same purpose of enabling user interaction with software, their design and user experience differ significantly.